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JavaScript
JavaScript is a scripting language used to create interactivity, such as moveable elements and dynamic content, in static HTML pages (JavaScript is not related to the more complex coding language Java). JavaScript code can be inserted directly into a page's HTML and is interpreted and activated by a JavaScript-enabled web browser as soon as the browser loads the page. Yahoo! Site Solution and some Web Hosting add-ons include JavaScript elements such as a rollover image or pull-down menus that won't be visible or work properly if your browser does not support JavaScript, or if this support has been disabled.
JustGive.org Buttons
JustGive.org Buttons is a Web Hosting add-on that allows you to display a button on your site that your visitors can use to make donations to charity. JustGive.org is a nonprofit service whose mission is to connect people with the charities and causes they care about and to increase overall giving. When your site visitors click the JustGive.org button on your page, they'll arrive on a JustGive.org page that will guide them through the donation process. Learn more.